/*
 [auto_generated]
 boost/numeric/odeint/integrate/detail/less_with_sign.hpp

 [begin_description]
 Helper function to compare times taking into account the sign of dt
 [end_description]

 Copyright 2009-2012 Karsten Ahnert
 Copyright 2009-2012 Mario Mulansky

 Distributed under the Boost Software License, Version 1.0.
 (See accompanying file LICENSE_1_0.txt or
 copy at http://www.boost.org/LICENSE_1_0.txt)
 */

#ifndef BOOST_NUMERIC_ODEINT_INTEGRATE_DETAIL_LESS_WITH_SIGN_HPP_INCLUDED
#define BOOST_NUMERIC_ODEINT_INTEGRATE_DETAIL_LESS_WITH_SIGN_HPP_INCLUDED

#include <boost/numeric/odeint/util/unit_helper.hpp>

namespace boost {
namespace numeric {
namespace odeint {
namespace detail {

/**
 * return t1 < t2 if dt > 0 and t1 > t2 if dt < 0
 */
template <typename T1, typename T2, typename T3>
bool less_with_sign(T1 t1, T2 t2, T3 dt) {
  if (get_unit_value(dt) > 0)
    return t1 < t2;
  else
    return t1 > t2;
}

/**
 * return t1 <= t2 if dt > 0 and t1 => t2 if dt < 0
 */
template <typename T1, typename T2, typename T3>
bool less_eq_with_sign(T1 t1, T2 t2, T3 dt) {
  if (get_unit_value(dt) > 0)
    return t1 <= t2;
  else
    return t1 >= t2;
}
}
}
}
}

#endif
